2001-07-10 Jan van Male <jan.vanmale@fenk.wau.nl>

	* regmove.c (replace_in_call_usage): Fix warnings.
	* sched-deps.c (add_dependence): Fix warnings.
	* simplify-rtx.c (simplify_subreg): Likewise.
	Return NULL_RTX instead of NULL.

	* reg-stack.c (emit_swap_insn): Eliminate warnings.
	(subst_asm_stack_regs): Likewise.

	* combine.c (num_sign_bit_copies): Cast bitwidth to int to avoid
	warnings.

	* dwarf2out.c (output_call_frame_info): Declare i as int.
	(build_abbrev_table): Declare n_alloc as int.
	(dwarf2out_finish): Initialize die.
	* except.c: Declare sjlj_funcdef_number as unsigned.
	(connect_post_landing_pads): Declare j as unsigned.
	(convert_to_eh_region_ranges): Initialize call_site.
	(output_function_exception_table): Initialize tt_format_size.
	* expr.c (move_by_pieces_1): Initialize to1.
	(store_constructor): Initialize minelt and maxelt.
	* flow.c (mark_regs_live_at_end): Declare i as unsigned.
	* function.c (instantiate_decls): Avoid signed/unsigned warning.

	* c-decl.c (combine_parm_decls): Unused, remove.
	* c-tree.h: Remove prototype for combine_parm_decls.

	* reload.c (push_reload): Fix warning.
	(regno_clobbered_p): Likewise.
	* reload1.c (replace_pseudos_in_call_usage): Likewise.
	(reload_combine): Likewise.

	* bitmap.c: Rename bitmap_zero to bitmap_zero_bits to fix warnings.
	* bitmap.h: Rename bitmap_zero to bitmap_zero_bits to fix
	warnings.
	* bitmap.c (bitmap_operation): Change user.
	* bitmap.h (EXECUTE_IF_AND_COMPL_IN_BITMAP): Likewise.
For cp/:
2001-07-10  Jan van Male  <jan.vanmale@fenk.wau.nl>

	* call.c (build_op_delete_call): Initialize fn.
	(convert_like_real): Delete conditional.
	(joust): Initialize *w and *l.
	* class.c: Add prototype for binfo_ctor_vtable.
	(get_primary_binfo): Initialize result.
	* init.c (build_java_class_ref): Initialize name.

	* typeck.c (unary_complex_lvalue): Do not duplicate the
	argument to modify, pre-, or post-increment when used as an
	lvalue and when the argument has side-effects.

For ch/:
2001-07-10  Jan van Male  <jan.vanmale@fenk.wau.nl>

	* ch-tree.h: Remove prototype for combine_parm_decls, unused
	function.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@43893 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 6 insertions, 6 deletions

diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c
index 3cdc3dc546d..b21066ed3cf 100644
--- a/gcc/simplify-rtx.c
+++ b/gcc/simplify-rtx.c
@@ -2196,7 +2196,7 @@ simplify_subreg (outermode, op, innermode, byte)
   if (CONSTANT_P (op))
     {
       int offset, part;
-      unsigned HOST_WIDE_INT val;
+      unsigned HOST_WIDE_INT val = 0;
 
       /* ??? This code is partly redundant with code bellow, but can handle
 	 the subregs of floats and similar corner cases.
@@ -2231,7 +2231,7 @@ simplify_subreg (outermode, op, innermode, byte)
 
 	  /* We can't handle this case yet.  */
 	  if (GET_MODE_BITSIZE (outermode) >= HOST_BITS_PER_WIDE_INT)
-	    return NULL;
+	    return NULL_RTX;
 
 	  part = offset >= HOST_BITS_PER_WIDE_INT;
 	  if ((BITS_PER_WORD > HOST_BITS_PER_WIDE_INT
@@ -2253,7 +2253,7 @@ simplify_subreg (outermode, op, innermode, byte)
 
 	  /* We don't handle synthetizing of non-integral constants yet.  */
 	  if (GET_MODE_CLASS (outermode) != MODE_INT)
-	    return NULL;
+	    return NULL_RTX;
 
 	  if (BYTES_BIG_ENDIAN || WORDS_BIG_ENDIAN)
 	    {
@@ -2322,8 +2322,8 @@ simplify_subreg (outermode, op, innermode, byte)
 	    return NULL_RTX;
 	  /* Bail out in case resulting subreg would be incorrect.  */
 	  if (final_offset % GET_MODE_SIZE (outermode)
-	      || final_offset >= GET_MODE_SIZE (innermostmode))
-	    return NULL;
+	      || (unsigned) final_offset >= GET_MODE_SIZE (innermostmode))
+	    return NULL_RTX;
 	}
       else
 	{
@@ -2339,7 +2339,7 @@ simplify_subreg (outermode, op, innermode, byte)
 	  if (offset == final_offset)
 	    final_offset = 0;
 	  else
-	    return NULL;
+	    return NULL_RTX;
 	}
 
       /* Recurse for futher possible simplifications.  */